I was a witness from age 13 to 23. A part from the easy social life it provided there was absolutely nothing of any value in any meeting I ever attended, going out in service, serving in the congregation, pioneering where the need was great, giving public talks, holding different positions. When I left and really started my life a new I was uneducated, clueless and un skilled other then in the most meaningless tasks.
Because I was always a serious reader I quickly out grew the foolishness of the WT propaganda and left with no problems. Everyone I knew who left, and there was a lot of us in the 1960's, did not turn to other faiths nor did their children years later.
It took my wife and I a good ten years to develop a productive life, make new friends, get some education and develop skills that allowed us to finally become self employed and totally independent.
When I turned 50 I finally felt I was on par with my peers, that wasn't what had motivated me................. just saying.
In all honesty the only thing I can think of where being an active witness might be helpful is if one became an Amway sales person............. if indeed they are still around.
My advice............ make sure your kids read, set a loving example. Discourage them from getting baptized, remind them that Jesus wasn't baptized until he was thirty years old. And of course some form of continuing education.